Exodus 28:31-34

31“You are to make the robe of the ephod entirely of blue.

32It is to have a hole for the head in the center, and a binding of woven work around the hole, as a collar, so that it may not be torn.

33On the hem of it you are to make pomegranates of blue, purple and scarlet, all around the hem, with golden bells between them:

34one golden bell and a pomegranate, then another golden bell and a pomegranate, on the hem of the robe all around.